difficulty困难可数吗

　　The bad weather only added to our difficulties.

　　恶劣的天气只是增加了我们的'困难。

　　I am acutely aware of the difficulties we face.

　　我十分清楚我们面临的困难。

　　Every job has its difficulties and frustrations.

　　每个工作都有困难和令人懊恼之处。

　　The government still face very serious difficulties.

　　政府仍面临着非常严重的困难。

　　It was a time fraught with difficulties and frustration.

　　这是一个充满困难和挫折的时期。